From 72523df3af05d5b89620e1679fecb43908d75ce1 Mon Sep 17 00:00:00 2001
From: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Date: Fri, 9 Feb 2018 11:24:11 +0100
Subject: [PATCH] ble: make sure the length of the manufacturer data is at
 least 1

We never encounter the issue, but I bet we will
---
 tuhi/ble.py | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tuhi/ble.py b/tuhi/ble.py
index 26e81f7..55c643c 100755
--- a/tuhi/ble.py
+++ b/tuhi/ble.py
@@ -136,8 +136,15 @@ class BlueZDevice(GObject.Object):
     @GObject.Property
     def vendor_id(self):
         md = self.interface.get_cached_property('ManufacturerData')
-        if md is not None:
-            return md.keys()[0]
+        if md is None:
+            return None
+
+        try:
+            return next(iter(dict(md)))
+        except StopIteration:
+            # dict is empty
+            pass
+
         return None
 
     @GObject.Property